Rotary scouring implement



Feb. 13, 1923. 1,445,133

S. H. BRAKE ROTARY SCQURING IMPLEMENT Filed Mar. 1'?, 1921 Patented Feb. 13, 1923.

ROTARY SCOURING IBILPLEMENT.

Application inea nai-C11 17, 1921. sei-iai No. 453,016.

To all whom t may cow/cern:

Bey it known that I, SAMUEL H. DRAKE, a citizen of the United States, and resident of Groton, in the county of rl`ompkins and State of New York, have invented certain new and useful Improvements in Rotary Scouring Implements, of which the following` is a specification. y

This invention relates to in'lprovements inirotary scouring implements for cleaning or scraping pots and pans orr other surfaces.

One object of the invention is to provide a simple, durable and inexpensive implement having a rotary cleaning head operable by a reciprocable handle.

Another important object` of the invention is to provide a rotary scraper head adapted to efectually clean concave, convex, or irregular surfaces las well as plane surfaces.

A. further object 0f the invention is to provide a light, flexible, sheet metal scraper head having scraping teeth.

Another object of the invention is to provide a rota-ry toothed scraper so constructed as to 'be self sharpening.

Another object of the invention is to provide a rotary scraper which will effectually clean the entire surface of a pot or pan bottom and will not pound or bind against the side walls of the pan or pot.

In the drawings,

Figure 1 is a side elevation of the device;

Fig. 2 a ventical sectional view thereof;

Fic'. 3 a horizontal section on the line in ni of rig. 1

Fig. l a fragmentary side elevation of the scraper head;

Fig. 5 a bottom plan View of the scraper head; and

Fig. 6 a detail vertical sectional View showing the scraper head flexed to conform to a concave surface.

The operating handle l comprises a cylindrical wooden body having an enlarged rounded upper end portion and a central longitudinal bore in which is mounted a metal tube or barrel 2. A metal impact re-v ceiving disk 3 is held at the upper end of the bore in handle 1 by tube 2. A cupshaped metal ferrule or end cap l fits over the lower end of handle 1 and is detachably held in place by screws 5. Cap 4 serves as a nut vfor imparting a rotary'motion to a metal rod or shaft G, said cap being provided with a square centra-l aperture 8 through which the spiral portion 7 of rod 6 passes. The driving rod 6 is preferably formed from a length of metal stock square in cross section,the portion 7 of the rod being twisted to form a spiral shank.

A helical compression spring 9 is c0111-,A

li ned in the upper portion of the metal barrel 2, and the upper end of rod 6 extends upwardly within the convolutions of, said spring. collar 10 formed on or rigidly held to rod 6 at the upper end of the Spiral portion 7 of the rod, is adapted to enga-ge Y cap al to limi-t the movement between the rod and handle in one direction, while the upper end of the rod is adapted to engage disk 3 to limit the relative vmovement between the rod and handle in the oppositel direction and i."

9 on collar 11 and disk l3 forces the handle upwardly.l It will be obvious that an up and down movement of the handle on rod 6 will cause an alternating rotary motion of the rod.

A rotary cleaning head orscraper isv detachably held to the lower endk of rod 6.

Heads of variouskinds may be employed.

l prefer, however, to employ the formo of head illustrated which is stamped from thin sheet metal tempered. to render the` headflexible and resilient. The head comprises a Central hub 12 connected to an annular rim 13 by six radial arms 14 A metal nut 15 is rigidly secured to the upper face of huby l l 12, preferably by means of studs 16 passing downwardly through apertures inthe hub and headed against the under face of the hub. Nut 15 is adapted to be screwed on the reduced threaded lower end. portion 17 of rod 6.

`The rotary head is normally bowed upwardly, that is the arms 14 normallyeX- tend downwardly and outwardly from hub 12 to rim 13. A row of teeth 18 is formed on each arm 14, said teeth being preferably stamped downward out of the arms intermediate the two side edges of the arms, as shown, to provide` guards in front and rear llO thersu'rface being cleaned.

of each row of teeth. lt will be obvious, however, that the teeth may be formed along the edges of the arms or stamped from a solid metal disk. lt will also be obvious that long blades may be substituted for the rows of teeth. are beveled olf so that these edges 19 of the teeth will ride upon the surface being cleaned. This arrangement provides selfsharpe'ning teeth as wear of ends 1S) of the teeth will always maintain a sharp cutting edge 2O along the leading` edges of the teeth. The body portions of the teeth extend upwardly and rearwardly from the leading edges of the teeth, and the teeth in each row are preferably staggered relatively to the teeth in the two adjacent rows, as shown, to increase the effective action of the teeth on The end tooth at the outer end of every other row of teeth is stamped out of rim 13, the outer side edge of the tooth being located at the perimeter of the rim. This arrangement permits use of the iheadfte scrape the bottom of a pan or pot around the junction of the s: le walls and bottom of the pan or pot.

f'lhe circular rim 13 prevents pounding or binding of the head or ends of arms lllagainst the side walls of a pot or pan. The normally upwardly dished conformation of the head permits effective use of the head in scraping convex surfaces, 'as indicated in Fig. 2, whilethe resilient and flexible character of the head permits the head to conform automatically to irregular surfaces, concavesu'rfaces, or flat surfaces, and also insures effective `pressure on the outermost teeth of the scraper head. ln Fig. 6 the head is shown 'flexed by pressure on theoperv ating handle to conform with a dished sul.' face.

lVhat l clai'mvis:

1. An implement of the class set forth comprising a thin resilient sheet metal head normally dished and 'provided with scraping teeth of uniform 'length on the dished face thereof, and means at the opposite face of the 'head and. connected therewith axially of said head operable'by opposing pressures on said means and the scraping teeth for rotating and flexing the head. l

2. A head for rotary scrapers compris-v ing a normally 'dished resilient sheet metal bodyv portion provided with integral flat The free edges of t-he teeth,

teeth arranged in rows radiating from the V axis of rotation of the head, the teeth in alternate rows being` staggered relatively to each other and all of said teeth being inclined towardtheir leading edges.

3. An implement of the class described comprising a scraper head provided with radially extending rows of teeth at one face thereof, the teeth in certain of said rows be ing staggered relatively to the teeth in the remaining rows, and means for rotating said head. s i

d. An implement of the class described comprising a sheet metal head having a multiplicity of inclined teeth stamped therefrom, the ends of said teeth being` adapted to ride upon the surface to be cleaned, and means for rotating said head.

5. A scraper head for cleaning implements comprising a hub and rim connected by a plurality of radial arms, and a row of teeth carriedby each arm, the teeth on alternate arms being relatively staggered.

6. A sheet metal scraper head for cleaning implements comprising a hub and an annular rim connected by integral arms each provided with a series of teeth extending longitudinally of the arms, said rim being provided with a plurality of circumferentially spaced teeth the outer edgesof which are located at the perimeter of the rim.

7. A sheetvinetal surface-scraping member provided with integral self-sharpening teeth, the free edges of which are adapted to ride upon a surface being` scraped and the body portions of which incline downwardly and forwardly to the leading edges of the teeth.

S. A resilient, laterally flexible, disk-like, rotary head for scraping appliances formed of sheet met-al and provided at one face thereof with radial rows of integral flat teeth stamped therefrom, said teeth having` their flat body portions lying in planes radiating from the center of the disk-like head and all inclined in the same direction around the head, and the leading edge of each flat tooth being` disposed at an 'angle to the pla-ne vof the body portion to adapt the same to 'ride on a surface to be scraped.

In testinomny whereof l hereunto affix my signature.

SAMUEL H. BRAKE. 

